Curl bar



FIG. 1 shows a perspective view of the curl bar;

FIG. 2 shows a right side view of the curl bar, wherein the left side is a mirror image;

FIG. 3 shows a top plan view of the curl bar, wherein the bottom plan view is a mirror image;

FIG. 4 shows a front view of the curl bar; and,

FIG. 5 shows a rear view of the curl bar. 

The ornamental design for a curl bar, as shown and described. 